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Effects of Impurities and Manufacturing Methods on the Devitrification of Silica Fibers
Author(s) -
Zhou Wancheng,
Fu Hengzhi,
Zhang Litong,
Sun Xiaomei,
She Shengyang,
Ma Junzhang
Publication year - 1991
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1991.tb04352.x
Subject(s) - devitrification , materials science , impurity , chemical engineering , leaching (pedology) , crystallization , composite material , mineralogy , chemistry , organic chemistry , engineering , environmental science , soil science , soil water
Devitrification resistance is one of the most important properties of silica fibers. The devitrification behavior of silica fibers made by the acid leaching method, the sol‐gel method, and the high‐purity silica fusing method, and the effects of small amounts of Al 2 O 3 and B 2 O 3 , were studied by using X‐ray diffraction. The results indicated that the devitrification tendency of silica fibers made by the high‐purity silica fusing method is apparently greater than that of the fibers made by the other two methods. A small amount of B 2 O 3 has the effect of retarding devitrification, while Al 2 O 3 promotes devitrification of the fibers. The combined effect of Al 2 O 3 and B 2 O 3 is to strongly enhance the devitrification of silica fibers. The results are discussed in the context of structural analysis.